C31231211113311331323133313331333133313331333133313331312333121   >>    C3123121111331133132313331333133313331333133313331333131233312   <<    C31231211113311331323133313331333133313331333133313331312333123   >>      C31231211113311331323133313331333133313331333133313331312333122   >>